Operating Segments and Related Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Operating Segments and Related Information
Number of reportable segments | segment			3
Number of operating segments | segment			3
Goodwill	$ 311,536		$ 311,536		$ 311,536
Total Assets	10,539,628		10,539,628		9,695,729
Net interest income	69,753	$ 73,476	209,999	$ 215,287
Non-interest income:	32,285	30,936	87,766	84,777
Non-interest expense:	56,542	68,121	170,124	193,304
Income before income taxes	39,947	32,880	91,985	98,721
Net income:	30,829	24,828	71,999	74,382
Operating segments | Banking
Operating Segments and Related Information
Goodwill	288,436		288,436		288,436
Total Assets	10,457,479		10,457,479		9,632,368
Net interest income	73,330	75,955	218,221	222,537
Non-interest income:	18,523	18,301	45,717	46,743
Non-interest expense:	44,863	56,593	135,037	158,659
Income before income taxes	41,441	34,252	93,245	102,582
Net income:	31,744	25,731	72,653	76,837
Operating segments | Remittance Processing
Operating Segments and Related Information
Goodwill	8,992		8,992		8,992
Total Assets	46,124		46,124		44,209
Net interest income	21	20	59	56
Non-interest income:	4,287	4,088	12,318	12,386
Non-interest expense:	3,523	2,746	9,669	8,099
Income before income taxes	785	1,362	2,708	4,343
Net income:	578	972	1,966	3,102
Operating segments | Wealth Management
Operating Segments and Related Information
Goodwill	14,108		14,108		14,108
Total Assets	42,593		42,593		32,760
Non-interest income:	10,662	8,994	32,681	27,721
Non-interest expense:	6,497	6,043	19,725	17,356
Income before income taxes	4,165	2,951	12,956	10,365
Net income:	3,166	2,184	9,847	7,670
Other
Operating Segments and Related Information
Total Assets	(6,568)		(6,568)		$ (13,608)
Net interest income	(3,598)	(2,499)	(8,281)	(7,306)
Non-interest income:	(1,187)	(447)	(2,950)	(2,073)
Non-interest expense:	1,659	2,739	5,693	9,190
Income before income taxes	(6,444)	(5,685)	(16,924)	(18,569)
Net income:	$ (4,659)	$ (4,059)	$ (12,467)	$ (13,227)